I use them because I do not have a smart phone so when the internet drops or the power is out I can still look up numbers. One of the reasons we still have a land-line is the fact that it works when the power is out.

I suggest that everyone who does still receive them but never uses them or just throws them away to search on the website for the company that provides the books for a way to unsubscribe. Those books are usually huge and a gigantic waste of paper.